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MathGroup Archive 2007

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Re: NDSolve. Getting the final values

  • To: mathgroup at smc.vnet.net
  • Subject: [mg74155] Re: NDSolve. Getting the final values
  • From: dh <dh at metrohm.ch>
  • Date: Mon, 12 Mar 2007 22:14:03 -0500 (EST)
  • References: <200703021137.GAA03828@smc.vnet.net> <et3797$qq7$1@smc.vnet.net>


Hi Chrisantha,

NDSolve gives a list of pure (function without name) functions back. By 

a replace rule you can get a named function. E.g.:

fun= y/. NDSolve[{y'[t]==y[t],y[0]==1},y,{t,0,1}][[1]]

we can then get the end value by e.g. by fun[1].

Note, if you have time consuming calculations, the object 

NDSolve`StateData may save you some time. See Help "NDSolve" under 

"Advanced Documentation".

good success, Daniel



Chrisantha wrote:

> Dear All,

> 

> Please could you explain how I can get the final values from the  

> output of NDSolve, and use them to re-initialize NDSolve with those  

> values and an altered parameter.

> 

> Yours,

> Chrisantha

> 

> 




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